Symptoms

Set Field Values step fails with below error message,

This step's 'Field values' field is assigned an output value from a step that no longer exists. 
To fix this problem, edit this step and replace the value for the 'Field values' field with a valid value.

Below screenshot shows the affected "Set Field Values" step in detail,

Release

Any supported release. 

Cause

The step 1 which is referred in the above screenshot is de-activated by the user as below, however "Set Field values" step depends on Step 1 output and hence "Set Field values" step errors out.

Resolution

Correct the "Step field values" step so that it doesn't refer Step 1 output.

OR

Activate the Step 1.

Additional Information

Automated Test Framework

Automated test form steps